The London Legacy Development Corporation wants the stadium to be used for sports other than football and athletics throughout the year. But on the prospects of American football, Hone said there have been "no active discussions with NFL for over a year."
The 80,000-seat stadium, which hosted the track and field competition at the 2012 Olympics, is being downsized to 54,000 seats and reconfigured with a new roof and retractable seats to cover the running track.
By the time it partially re-opens for the 2015 Rugby World Cup, the stadium could be hard to recognize from how the world saw it during the Olympics.
Work is underway to remove the triangular floodlights, described by the legacy company as "iconic," although a similar design will feature in the revamped stadium.
Initially, after London was awarded the Olympics in 2005, organizing chief Sebastian Coe and the British government rejected calls for the stadium to be designed so football could be played in it after the games.
Only when construction was underway did officials decide to allow football to use the stadium, adding to the cost of its post-Olympics transformation.
The conversion costs are expected to hit 200 million pounds ($323 million), although West Ham will only contribute 15 million pounds ($24 million) as part of its 99-year lease deal.
